US4212350A - Modular element radiator-convector - Google Patents

Modular element radiator-convector Download PDF

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Publication number
US4212350A
US4212350A US05/674,268 US67426876A US4212350A US 4212350 A US4212350 A US 4212350A US 67426876 A US67426876 A US 67426876A US 4212350 A US4212350 A US 4212350A
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US
United States
Prior art keywords
fins
plate
radiator
channels
sleeve member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/674,268
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English (en)
Inventor
Mario Andreoli
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Individual
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Individual
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Filing date
Publication date
Priority claimed from IT340275A external-priority patent/IT1033657B/it
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US4212350A publication Critical patent/US4212350A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/088—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal for domestic or space-heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05308—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/327—Thermosyphonic having vertical air draft passage
    • Y10S165/328—Air draft passage confined entirely or in part by fin structure

Definitions

  • This invention relates to a radiator-convector comprising a plurality of assembled modular elements.
  • the circulation of air is mainly dependent on the ascensional thrust the air is subjected to when being heated. That air ascensional thrust, deriving from the density difference between the heated air and surrounding air, is, however, limited. It thus occurs that, when the ascending air stream, previously heated to a large extent in the radiator bottom portion, reaches the radiator upper portion, it presents a somewhat reduced thermal gradient with respect to the radiator, with consequent reduction in the heat exchange rate. Thus, a thermal saturation condition is arrived at which reduces the radiator effectiveness.
  • radiators have been proposed (West German Pat. No. 838,647) wherein the fins are inclined from the vertical.
  • air flows obliquely through the radiator whereby, between that same air and the surface licked by it, there should be maintained an appreciable thermal gradient, thereby said thermal saturation phenomenon should be eliminated.
  • that oblique arrangement of the fins proved to hinder the air rising motion, whereby the saturation effect is not completely eliminated.
  • radiator-convector comprising a plurality of assembled modular elements each of which comprises an upper sleeve member, a lower sleeve member parallel to said upper sleeve member, a plate cast integral with said sleeve members and perpendicular to a plane passing through said sleeve members, said plate having a front edge and rear edge, a conduit formed in said plate and connecting said upper sleeve member with said lower sleeve member, fins extending from the opposite sides of said plate and comprising substantially parallel fins obliquely arranged with respect to said plane and front fins provided at the front edge of said plate and forming a front wall, said front fins and the plate of adjacent elements when assembled defining air ducting vertical channels each having a lower inlet opening and an upper outlet opening and said parallel fins defining air ducting oblique channels, wherein according to the improvement said oblique channels have their lower ends open at the rear edges of said plates and
  • FIG. 1 is an elevational view of a modular element according to a first embodiment of the invention
  • FIG. 2 is a sectional view taken along the line II--II of FIG. 1;
  • FIG. 3 is an elevational view of a modular element according to a further embodiment of the invention.
  • FIG. 4 is a view of a variation of the modular element lower portion
  • FIG. 5 is an elevational view of a modular element according to yet another embodiment of the invention.
  • FIG. 6 is a sectional view taken along the line VI--VI of FIG. 7;
  • FIG. 7 is a sectional view taken along the line VII--VII of FIG. 6;
  • FIG. 8 is a sectional view taken along the line VIII--VIII of FIG. 5 rotated clockwise by 90°;
  • FIG. 9 shows the lower portion of a radiator-convector unit according to a further embodiment of the invention.
  • the numeral 1 identifies generally one of the modular elements which make up a radiator-convector unit according to the invention.
  • the element 1 comprises two sleeves 2, 3 parallel to each other and interconnected together by means of a conduit 4.
  • the front ends of the sleeves 2, 3 are provided, in a known manner, with annular projections on one side, and annular seats complementary to said projections on the other side.
  • the projections may be fitted in the seats thus enabling coupling together of two or more elements, by locking them to each other through tie rods led through the sleeves 2, 3, according to a conventional technique, or through nipples, provided with opposite-handed threads and screwed into the aligned sleeves of adjacent elements.
  • plate 5 In the centerplane, perpendicular to the sleeves 2, 3 and cast therewith, plate 5 is provided which is perpendicular to a plate passing through the sleeve members 2, 3. On the opposite faces of the plate 5, in the area included between the sleeves 2, 3, a plurality of fins 6 are provided having the same width extension and being parallel to one another.
  • the fins 6 are perpendicular to the plate 5 and arranged obliquely with respect to the plane passing through the sleeve 2, 3.
  • the angle ⁇ (alpha) included between the fins 6 and the plane perpendicular to the conduit 4 is approximately of 75°.
  • the oblique channels are inclined such that the air intake in one channel is at a lower level than the exhaust.
  • a front fin 8 for directing the air flow, there is provided at the lower sleeve a front fin 8, while at the upper sleeve 2 a further front fin 9 is provided.
  • the plate 5 comprises an area which projects forward beyond the front ends of the oblique fins 6. Perpendicularly to said area and on both faces of the plate 5, are fins 10 rigid therewith in the proximity of the front edge, and which extend almost over the full height of the radiator between the sleeves 2, 3.
  • the fins 10 have the same side width as the fins 6, whereby, when the modular elements are assembled together, they form the visible front wall of the radiator-convector and define vertical channels 11 for leading the rising air stream.
  • Ribs 12 and converging toward the channel 11, are provided at the lower air intake.
  • the reference numeral 13 identifies fins arranged just behind the front fins 10 and substantially parallel to the latter.
  • the fins 13 have a smaller width than the fins 10, so that in assembled condition an interspace is defined between the opposite edges of fins belonging to adjacent elements which favors a turbulent circulation for the rising air.
  • the distance of the oblique fin 6 upper ends from the front wall defined by the fins 10 is gradually increasing from bottom to top (see FIG. 1). In this manner, the channel 11 is enabled to receive the air convoyed thereto by the oblique channels 7, since the air flow increases as it moves upwards.
  • the air flow along the channel 11 has a draft effect, thus drawing in more air from the oblique channels, eliminating the thermal saturation as mentioned and increasing the unit efficiency.
  • the water inlet may be provided at the lower manifold formed by the lower sleeves 3 and the water outlet at the upper one formed by the upper sleeves 2.
  • a greater heat exchange occurs, which increases the convective capacity of the radiator and causes a greater rising velocity for the air as well as a greater draft through the oblique fins.
  • the air lower intake is provided with a greater number of ribs 14, the lower portions whereof are bent forward and terminate at the inclined lower front edge of the plate 5.
  • the increasing cross-section, from bottom to top, of the vertical channel II, rather than being obtained by providing shorter oblique fins as shown in FIG. 1, may be obtained with oblique fins of equal length, by arranging the front wall slightly inclined forward, as shown in FIG. 3.
  • the upper sleeve 15 and lower sleeve 16 are interconnected by a conduit 17 and a plate 18.
  • the oblique fins 19 extend from opposite faces of the plate 18 which, when the modular elements are brought together, define the oblique channels 20.
  • the plate 18 comprises a portion 22 extending beneath the lower sleeve 16 and the fin 21 which is provided along the front edge of the plate 18 and projects perpendicularly from both faces of the plate 18, defines, at the portion 22 an arc 23 which forms the housing of an axial fan indicated generally at 24.
  • a circular opening 25 is formed in the portion 22, adapted to accomodate therethrough the drumlike impeller 26 of the fan 24.
  • the impeller 26 has its ends supported on flanges 27 and 28 fastened by means of screws to the portion 22 of the side elements.
  • the fan motor 29 is housed in a seat defined laterally to the portion 22.
  • further exchange fins 31, 32 are provided, the former fin being effective to induce a greater turbulence, and the latter to increase the exchange surface area at intake of the vertical channels.
  • the radiator in FIG. 5 is completed by a vertical fin 33 the lower end whereof defines, together with the opposite portion of the fin 21, the fan outlet port which, accordingly, is aligned with the vertical channel 30.
  • an air filter 34 comprising a fine mesh screen or other suitable material.
  • the fan housing is not cast integral in the radiator element, and is rather a component part of the fan itself.
  • the fan identified with the numeral 35, is mounted directly to the lower part of the radiator in a specially provided seat and secured by means of bolts 36 passed through ear flanges formed in the blower housing and modular elements.
  • the air flow rather than being produced by a fan impeller blowing from below through the radiator, as shown in FIG. 5, is accomplished through a fan arranged at the top of the radiator and sucking air.
  • the elements which form the radiator have a monolithic structure and are made by die-casting of light alloys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
US05/674,268 1975-04-11 1976-04-06 Modular element radiator-convector Expired - Lifetime US4212350A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT476375 1975-04-11
IT4763/75[U] 1975-04-11
IT340275A IT1033657B (it) 1975-05-06 1975-05-06 Radiatore convettore a circolazione forzata dell aria
IT3402A/75 1975-05-06

Publications (1)

Publication Number Publication Date
US4212350A true US4212350A (en) 1980-07-15

Family

ID=26325373

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/674,268 Expired - Lifetime US4212350A (en) 1975-04-11 1976-04-06 Modular element radiator-convector

Country Status (9)

Country Link
US (1) US4212350A (ru)
AT (1) AT352950B (ru)
BE (1) BE840473A (ru)
CH (1) CH616738A5 (ru)
DE (1) DE2615230A1 (ru)
ES (1) ES446841A1 (ru)
FR (1) FR2330969A1 (ru)
GB (1) GB1548606A (ru)
GR (1) GR59805B (ru)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111671A (en) * 1991-02-07 1992-05-12 General Motors Corporation Evaporator with expanding and contracting passes for improving uniformity of air temperature distribution
US5341455A (en) * 1992-02-18 1994-08-23 Miralfin S.R.L. Oil radiator with welded plate radiating elements having folded portions providing cool planar lateral outer surfaces for preventing injuries
ES2073340A2 (es) * 1993-02-19 1995-08-01 Avila Jesus Quintanilla Convector termostatado de aire forzado por electroventiladores para radiadores de calefaccion domestica.
WO2007028824A1 (en) * 2005-09-08 2007-03-15 Euro Fire Aktiebolag Heating and cooling devices, and ribs thereon
US20160209078A1 (en) * 2015-01-15 2016-07-21 Stylianos Giannoulis Heating device
CN106338210A (zh) * 2016-11-22 2017-01-18 珠海格力电器股份有限公司 散热器及其控制方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703125A1 (de) * 1986-03-07 1987-09-10 Jakob Adam Konvektionsheizung
ITUD20120051A1 (it) * 2012-03-23 2013-09-24 Longhi Appliances S R L Con Un Ico Socio De Dispositivo di riscaldamento
IT201800005477A1 (it) * 2018-05-17 2019-11-17 Elemento di radiatore da riscaldamento

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509170A (ru) *
US446580A (en) * 1891-02-17 Radiator
US1829241A (en) * 1926-12-29 1931-10-27 Herman Nelson Corp Process of assembling radiators
US1903125A (en) * 1930-12-26 1933-03-28 Modine Mfg Co Radiator
US2229128A (en) * 1940-03-27 1941-01-21 Frank C Reynolds Cabinet radiator
GB729554A (en) * 1951-02-13 1955-05-11 It Radiatori Tiraggio Attivato Improvements relating to space-heating radiators
CH324596A (de) * 1954-06-15 1957-10-15 Lehmann Ernst Wärmeaustauscher
FR1254959A (fr) * 1960-01-16 1961-03-03 échangeur de chaleur à panneau, pour installations de chauffage
CA665402A (en) * 1963-06-25 Moritz Georges Radiator, chiefly for central heating system, operating with hot water or with low pressure steam
US3470352A (en) * 1966-12-29 1969-09-30 Carter James B Ltd Electric heater
DE1915629A1 (de) * 1968-03-28 1970-01-29 Ottorino Benetollo Aus einzelnen Elementen bestehende Heizkoerper
US3592260A (en) * 1969-12-05 1971-07-13 Espey Mfg & Electronics Corp Heat exchanger with inner guide strip
US3774680A (en) * 1970-12-18 1973-11-27 M Andreoli Compoundable unit air conditioning apparatus
US3867981A (en) * 1972-09-29 1975-02-25 Robbins & Myers Heat exchange structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1217649A (fr) * 1958-05-17 1960-05-04 Radiateur pour chauffages centraux à eau chaude ou à vapeur à basse pression
AT328135B (de) * 1970-12-31 1976-03-10 Benteler Werke Ag Warmetauscher
CH544920A (de) * 1972-12-18 1973-11-30 Paveg Anstalt Radiator
DE2523305A1 (de) * 1974-07-17 1976-01-29 Albari Spa Radiator

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA665402A (en) * 1963-06-25 Moritz Georges Radiator, chiefly for central heating system, operating with hot water or with low pressure steam
US446580A (en) * 1891-02-17 Radiator
BE509170A (ru) *
US1829241A (en) * 1926-12-29 1931-10-27 Herman Nelson Corp Process of assembling radiators
US1903125A (en) * 1930-12-26 1933-03-28 Modine Mfg Co Radiator
US2229128A (en) * 1940-03-27 1941-01-21 Frank C Reynolds Cabinet radiator
GB729554A (en) * 1951-02-13 1955-05-11 It Radiatori Tiraggio Attivato Improvements relating to space-heating radiators
CH324596A (de) * 1954-06-15 1957-10-15 Lehmann Ernst Wärmeaustauscher
FR1254959A (fr) * 1960-01-16 1961-03-03 échangeur de chaleur à panneau, pour installations de chauffage
US3470352A (en) * 1966-12-29 1969-09-30 Carter James B Ltd Electric heater
DE1915629A1 (de) * 1968-03-28 1970-01-29 Ottorino Benetollo Aus einzelnen Elementen bestehende Heizkoerper
US3592260A (en) * 1969-12-05 1971-07-13 Espey Mfg & Electronics Corp Heat exchanger with inner guide strip
US3774680A (en) * 1970-12-18 1973-11-27 M Andreoli Compoundable unit air conditioning apparatus
US3867981A (en) * 1972-09-29 1975-02-25 Robbins & Myers Heat exchange structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111671A (en) * 1991-02-07 1992-05-12 General Motors Corporation Evaporator with expanding and contracting passes for improving uniformity of air temperature distribution
US5341455A (en) * 1992-02-18 1994-08-23 Miralfin S.R.L. Oil radiator with welded plate radiating elements having folded portions providing cool planar lateral outer surfaces for preventing injuries
ES2073340A2 (es) * 1993-02-19 1995-08-01 Avila Jesus Quintanilla Convector termostatado de aire forzado por electroventiladores para radiadores de calefaccion domestica.
WO2007028824A1 (en) * 2005-09-08 2007-03-15 Euro Fire Aktiebolag Heating and cooling devices, and ribs thereon
US20160209078A1 (en) * 2015-01-15 2016-07-21 Stylianos Giannoulis Heating device
US10921022B2 (en) * 2015-01-15 2021-02-16 Stylianos Giannoulis Heating device
CN106338210A (zh) * 2016-11-22 2017-01-18 珠海格力电器股份有限公司 散热器及其控制方法
CN106338210B (zh) * 2016-11-22 2018-06-08 珠海格力电器股份有限公司 散热器及其控制方法

Also Published As

Publication number Publication date
DE2615230A1 (de) 1976-10-21
FR2330969A1 (fr) 1977-06-03
ATA262876A (de) 1979-03-15
ES446841A1 (es) 1977-06-01
BE840473A (fr) 1976-08-02
GB1548606A (en) 1979-07-18
AT352950B (de) 1979-10-10
CH616738A5 (ru) 1980-04-15
GR59805B (en) 1978-02-28

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